package com.tang.gulimall.auth.controller;


import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.tang.common.constant.AuthServerConstant;
import com.tang.common.exception.BizCodeEnume;
import com.tang.common.utils.HttpUtils;
import com.tang.common.utils.R;
import com.tang.common.vo.MemberRespVo;
import com.tang.gulimall.auth.feign.MemberFeignService;
import com.tang.gulimall.auth.feign.ThirdPartFeignService;
import com.tang.gulimall.auth.vo.UserLoginVo;
import com.tang.gulimall.auth.vo.UserRegistVo;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.cache.RedisCache;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.util.StringUtils;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Controller
@Slf4j
public class LoginController {

    @Autowired
    ThirdPartFeignService thirdPartFeignService;

    @Autowired
    RedisTemplate redisTemplate;

    @Autowired
    MemberFeignService memberFeignService;

    /**
     * 获取短信验证码
     *
     * @param phone
     * @return
     */
    @ResponseBody
    @GetMapping("/sms/sendcode")
    public R sendCode(@RequestParam("phone") String phone) {

        //TODO 1、接口防刷。
        String redisCode = (String) redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone);
        if (!StringUtils.isEmpty(redisCode)) {
            long l = Long.parseLong(redisCode.split("_")[1]);
            if (System.currentTimeMillis() - l < 60000) {
                //60秒内不能再发
                return R.error(BizCodeEnume.SMS_CODE_EXCEPTION.getCode(), BizCodeEnume.SMS_CODE_EXCEPTION.getMsg());
            }
        }
        Map<String, String> querys = new HashMap<>();
        querys.put("effectiveTime", "300");
        querys.put("name", "sms");
        Map<String, String> mobileMap = new HashMap<>();
        mobileMap.put("mobile", phone);
        HashMap<String, String> header = new HashMap<>();
        header.put("Content-Type", "application/json");
        HttpResponse httpResponse = null;
        try {
            httpResponse = HttpUtils.doPost("http://localhost:56085", "/sailing/generate", null, header, querys, JSON.toJSONString(mobileMap));
        } catch (Exception e) {
            log.error(e.getMessage());
            e.printStackTrace();
        }

        System.out.println(httpResponse);

        return R.ok();
    }


    /**
     * //TODO 重定向携带数据，利用session原理。将数据放在session中。
     * 只要跳到下一个页面取出这个数据以后，session里面的数据就会删掉
     * <p>
     * //TODO 1、分布式下的session问题。
     * RedirectAttributes redirectAttributes：模拟重定向携带数据
     *
     * @param vo
     * @param result
     * @param redirectAttributes
     * @return
     */
    @PostMapping("/regist")
    public String regist(@Valid UserRegistVo vo, BindingResult result,
                         RedirectAttributes redirectAttributes,
                         HttpSession session) {
        if (result.hasErrors()) {
            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage, (n1, n2) -> n1));
//            model.addAttribute("errors",errors);
            redirectAttributes.addFlashAttribute("errors", errors);
            //Request method 'POST' not supported
            //用户注册->/regist[post]----》转发/reg.html（路径映射默认都是get方式访问的。）

//            session.set
            //校验出错，转发到注册页
            return "redirect:http://auth.gulimall.com/reg.html";
        }


        //1、校验验证码
        String code = vo.getCode();
        String s = (String) redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
        if (!StringUtils.isEmpty(s)) {
            if (code.equals(s.split("_")[0])) {
                //删除验证码;令牌机制
                redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
                //验证码通过。 //真正注册。调用远程服务进行注册
                R r = memberFeignService.regist(vo);
                if (r.getCode() == 0) {
                    //成功
                    return "redirect:http://auth.gulimall.com/login.html";
                } else {
                    Map<String, String> errors = new HashMap<>();
                    errors.put("msg", r.getData("msg", new TypeReference<String>() {
                    }));
                    redirectAttributes.addFlashAttribute("errors", errors);
                    return "redirect:http://auth.gulimall.com/reg.html";
                }

            } else {
                Map<String, String> errors = new HashMap<>();
                errors.put("code", "验证码错误");
                redirectAttributes.addFlashAttribute("errors", errors);
                return "redirect:http://auth.gulimall.com/reg.html";
            }
        } else {
            Map<String, String> errors = new HashMap<>();
            errors.put("code", "验证码错误");
            redirectAttributes.addFlashAttribute("errors", errors);
            //校验出错，转发到注册页
            return "redirect:http://auth.gulimall.com/reg.html";
        }
    }


    @PostMapping("/login")
    public String login(UserLoginVo vo, RedirectAttributes redirectAttributes,
                        HttpSession session) {


        //远程登录
        R login = memberFeignService.login(vo);
        if (login.getCode() == 0) {

            MemberRespVo data = login.getData("data", new TypeReference<MemberRespVo>() {
            });
            ////成功放到session中
            session.setAttribute(AuthServerConstant.LOGIN_USER, data);
            return "redirect:http://gulimall.com";
        } else {
            Map<String, String> errors = new HashMap<>();
            errors.put("msg", login.getData("msg", new TypeReference<String>() {
            }));
            redirectAttributes.addFlashAttribute("errors", errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }


    @GetMapping(value = "/login.html")
    public String loginPage(HttpSession session) {

        //从session先取出来用户的信息，判断用户是否已经登录过了
        Object attribute = session.getAttribute(AuthServerConstant.LOGIN_USER);
        //如果用户没登录那就跳转到登录页面
        if (attribute == null) {
            return "login";
        } else {
            return "redirect:http://gulimall.com";
        }
    }


    //loguot.html

    @GetMapping(value = "/loguot.html")
    public String loguot(HttpSession session) {
        session.invalidate();
        return "login";
    }
}
